Printing press



April 28, 1931. M. w. BRUESHABER 1,802,702

I PRINTING PRESS Filed Jan. 16l 1923 4 Sheets-Sheet l l' .4 ("5 LL- wf Cf *.3

INVENTOR A" TORNEY April 28, 1931- M. w. BRUESHABER 1`,802;7();.7?n

PRINTING PRESS 'Filed Jan. 16. 1925 4 Sheets-Sheet 2 HIIII April 28,1931- M. w. BRUESHABER 1,802,702

y PRINTING PRESS Filed Jan. 16, 1923 4 Sheets-Sheet 5 V 727. eww/Jb,

A TORNEY April 28, 1931- M. w. BRUESHABER- 1,802,702

PRINTING PRESS Filed Jan. 16, 1925 4 Sheets-Sheet 4 AT RNEY Patented pr. 28, 1931 STATES PATENT OFFICE MARTIN W. BRUESHABER, OF CHICAGO, ILLINOIS, ASSIGNOR TO GOSS PRINTING PRESS COMPANY, A CORPORATION OF ILLINOIS PRINTING PRESS Applicationled January 16, 1923. Serial No. 612,946.

The invention relates to printing presses, and more especially to means for easily and accurately variably positioning the shaft bearings of a cylinder to regulate the degree of pressure between the two cylinders of a printing couple, or to accurately position the surface of one cylinder with respect to that of the other.

Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned by practice with the invention, the same being realized and attained by means of the instrumentalities and combinations pointed out in the appended claims.V

The invention consists in the novel parts, constructions, arrangements, combinations and improvements herein shown and described.

The accompanying drawings, referred to herein and constituting a part hereof, illustrate one embodiment of the invention, and together with the description, serve to eX- plain the principles of the invention.

Of the drawings Fig. l is a detail side elevation, with certain parts broken away and others in section, of a mechanism, embodying the invention;

Fig. 2 is a part plan and part section, taken substantially on the line 2--2 of Fig. 1;

Fig. 3 is a fragmentary top plan, showing the invention adapted to simultaneously p0- sitioning or regulating both bearings of a cylinder shaft;

Fig. 4 is a top plan, showing the invention adapted to positioning or regulating the bearings at the same ends of the shafts of two cooperating cylinders;

Fig. 5 is a fragmentary top plan, showing the adaptation of the invention to the simultaneous adjustment of the four bearings of two cylinders, which may or may not be in cooperation in the same printing couple;

Fig. 6 is a view similar to Fig. 5, but showing a modified form of mechanism at the right-hand side, and showing at the lefthand side independent controls for the two cylinders and their shafts.

Referring now in detail to the embodiment of the invention illustrated by way of eX- ample in the accompanying drawings, in Figs. 1 and 2 a split bearing box for the cylinder shaft is shown, slidable to and fro horizontally on a seat formed in a recess in the machine frame for the purpose of accurately positioning the cylinder. 4 stood that the terms horizontal and vertical7 are merely used for convenience and brevity and refer only to the position .of the drawings on the sheet, but do not limit the mechanism.

In the embodied form member 1 thereof has on its bottom a support andvslidable bearing upon the surface2 of the opening 3 in the machine frame, or like member 4. The exterior part of the member l of the bearing has an external flange 5, eX- tending over the side face of the frame member, the bearing also projecting beyond the frame in the usual manner, as will be seen from Figs. 1 and 2. Also on the opposite side of the frame and bearing, a similar flange 6 projects over the side face of the frame.

The upper half or member 10 of the split bearing ts into the lower half, the abutting or contacting parts being shaped to interlock against horizontal displacement. As shown, the exterior parts 11 and 12 of the lower member 1 ofthe bearing at either side, eX- tends upwardly quite a distance beyond the horizontal center line of the cylinder shaft. Into the space between the upwardly projecting parts 11 and 12, just described, the downwardly extending parts13 and 14 of the upper member of bearing extend, their exterior surfaces forming a sliding lit with the inner surfaces of the parts 11 and 12. The lower ends of the parts 13 and 14 are preferably on a line'with the center line of the shaft. Thus each part of the bearing has substantially a heini-cylindrical recess, these Atogether constituting the shaft bearing. The two members of the bearing move horizontally together, and are vertically adjustable relatively to each other.

The upper member of the bearing box has pharts 15 and v16 extending outwardly from t e horizontal tops of the parts 11 and 12 of the It will be under-l of bearing, the lower parts 13 and 14, and overhanging the member l of the bearing.

lower part l of the bearing, and its flat horizontal top is indicated by 9. rlhis upper part of the bearing has side anges 18 and 18a substantially the same as or similar to, the flanges of the lower member of the bearing, already described.

A bushino' 17 is usually provided within the bearing and about the shaft. The two members of the split bearing are held together, and are adjustable with respect to their lit about the shaft by suitable means, such as bolts i9, 20, 2l and countersunh in the top of the upper surface 9 of the upper member l() of the bearing, and screw-threaded into corresponding apertures in the lower` By the adjustment of the screws 19 to 22, the bearing can be made as tiobt or as loose as described, and may be adj ated to compensate for wear. Vlhe bearing has a cap 23, lit-ting over the top thereof, and between the flanges 18 and 18a of the top half of the 1searing. At its ends cap 28 has transversely 'sposed, downwardly extending flanges anl 2LP, 'tting over corresponding shoulders 25 and 25a on the machine frame. Screw bolts a6 and 26apass through apertures in the cap and are screwthreaded into the machine frame. The shaft bearing is thus held in place vertically but is slidable horizontally beneath the cap to regulate the position of the cylinder.

Means are provided for so moving or regulably positioning the bearing and shaft in the horizontal direction of Figs. l and 2, while at the same time preventing unfavorable action upon or disturbance of the lit of the bearing about the shaft. ln the embodied form, the bearing member l has its outer end surfaces or sides 27 and 28 upwardly and outwardly inclined. ln contact with these surfaces 27 and 28 are the correspondingly beveled faces 3l and 32 of two wedges or positioning members 29 and 30. rlhese wedges are positioned at either side of the bearing proper within the frame opening. rlhe opposite vertical faces 33 and 34, respectively, of these two wedges work against the vertical faces 35 and 36 of the side walls of the opening in the frame piece 4L.

Means are provided for accurately simultaneously raising one of the wedges and lowering the other by an equal ext-ent, so as to move, position or adjust the shaft horizontally without aecting the adjustment of the bearing as to its tightness or looseness with respect to the shaft. In the embodied form of said means, each of the wedges has centrally thereof and vertically disposed, a screw-threaded aperture into which are screw-threaded, respectively, bolts liet and 45. These bolts pass upwardly loosely through apertures in the bearing cap 23, and means are provided externally to the cap for very accurately and equally rotating the bolts simultaneously in opposite directions to effect the movement of the adjusting wedges as already described.

Y ln the preferred embodied form thereof, the bolts la and 45 are provided, respectively, with heads t6 and 417. Beneath these heads there are formed on the bolts worm wheels i8 and 49, with which mesh, respectively, worms 50 and 5l, formed on a horizontally disposed rod or shaft 52. The shaft 52 has bearings in brackets 53 and 54, which are each fastened to the top of the cap 23 by y a tap bolt 55, passing through a laterally eX- tending base 56 of the bracket, and screwthreaded into .the cap.

The rod has preferably suitable turning means, and as embodied, it is provided centrally with an enlarged hexagonal portion 51. `Within the free space above the corresponding wedge or positionino` member 29 or 39 and between The upper bearing member and the frame, there is preferably screwthreaded onto the bolts le and 45, respectively, locking nuts` and 59. although these may be dispensed with if desired.

By the construction just described, the adjusting wedges may be preliminarily set relatively to the pressure proper to be exerted on the shaft, and by means of the common worm and worm wheel actuating means for the bolts or screws all and 45, the bearing may be nicely and accurately moved in either direction horizontally without disturbing the pressure on the shaft, and without any lost motion or any inequalities of movement between the two spacing members, and without varying in any degree the fit or pressure of the bushing or bearing on the shaft.

ln Figs. 3 to 6 of the drawings, various adaptations or extentions of the invention to a plurality of bearings are illustrated. In Fig. 3 the invention is shown applied to the two bearings at either end of a press cylinder 66. That is a single actuating device is shown for simultaneously positioning both ends of the cylinder shaft. In this case each of the shafts 52 has at its end a worm 60, meshing with a worm wheel 61, respectively, fixed on a shaft 62, journaled 63 and 64 on the machine frame. The shaft is provided with one or more hand wheels 65. lt will be understood, however, that in many instances it may be equally acceptable or even preferable to have the two mechanisms at either end of the cylinder shaft separately adjustable.

In Fig. l is shown a printing couple, having cylinders 66 and 67, which may be the form and impression cylinders of a printing couple, having, respectively, pairs of bearer rings 68 and 69 and 70 and 71, bearing on each other in the usual manner. ln this case the shafts 52a and 52b are connected together or are integral through the part .72, and by turning either shaft 52, both bearings at that end will be moved closer together or farther apart and their cylinders with them.

In Iig. 5 a simultaneous or common adjustment 1s shown for the four bearings at each end of each of two cylinders. As embodied, in addition to the mechanism as already described, the rods or shafts 52L have extensions 76 and 77, provided at their ends with worm wheels 78 and 79, respectively. Meshing with these worm wheels are corresponding worms 8O and 8l, fixed on a cross shaft 82, which is Journaled in bearings 83 and 84, on the machine fra-me. The shaft 82 is preferably provided with hand wheels 85 and 86 at either end thereof. l

In Fig. 6 there is shown at either the top or bottom a common adjusting means for both ends of the shaft of a cylinder, and at the right-hand side of Fig. 6 is shown a simultaneous common adjustment for the bearings at the corresponding or same ends of cooperating cylinders. These two mechanisms are shown in this single figure for the sake of brevity. In this figure, the driving connection between the cross shafts and the worm carrying shaft is shown as bevel gears 87.

By my invention mechanism is provided which will provide for translational regulation or positioning of heavy bearings with the greatest nicety and exactness, and also with utmost ease and rapidity. The bearing at the same time is kept in uniform relation to the shaft at all times as to pressure and t, as in positioning the bearing the pressure is applied to one side and withdrawn from the other side thereof in absolutely equal degrees or amounts, thereby preserving undisturbed said relation of the bearing and the shaft.

The very exact equal but oppositely directed simultaneous movement imparted to the two wedges will keep t-he pressure be-V tween the wedges and the bearing box constant. When, as is usual, the two mechanisms at each side of a journal box are independently operable by means of a Wrench or other tool, the pressman is likely to draw the wedges too tight, which results in jamming the box against the shaft and burning the bearing, or he may not draw the wedges tight enough, thereby leaving the box and bearingrloose. The present invention further admits of adclaims without departing from the principles of the invention and without sacrificing its chief advantages.

What I claim is l. A mechanism for variably positioning a printing press cylinder and cylinder bearing including in combination a frame, a cylinder of a printing couple having a shaft and a bearing therefor movably mounted on the frame, wedge-shaped spacing members at either side of the bearing, a screw-threaded member engaging each spacing member, and vmeans mounted entirely on one side of the axis of the shaft for turning the screwthreaded members to simultaneously move the spacing members in reverse directions.

2. A mechanism for variably positioning a printing press cylinder and cylinder bearing including in combination a frame, a cylinder of a printing couple having a shaft and a bearing therefor movably mounted on the frame, wedge-shaped spacing members at either side of the bearing, a screw-threaded member engaging each spacing member, and means including a worm and worm-wheel for each screw-threaded member mounted entirely on one side of the axis of the shaft for turning the screw-threaded members to simultaneously move the spacing members in reverse directions.

3. In combination in a printing press a plurality of rotary printing members having a plurality of bearings, means for variably positioning each bearing including a pair of reversely traveling wedge members and a screw-threaded ymember for moving each wedge, and devices including a worm and Worm-wheel for each screw-threaded member for simultaneously varying the impression relations of the rotary printing members.

In testimony whereof, I have signed my name to this specification.

MARTIN W. BRUESHABER.

justing the impression very much more readily and very much more accurately than the method of operating both bolts or wedges independently. It will be understood, of course, that the connections could be arranged to move t-he wedges or equivalent adjusting devices in the same direction, 1n which case the inclination or bevel in the wedges could be reversed.

The invention in its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therefrom within the scope of the accompanying 

